Hi all,new to the forum and seems like a great place for info!I have a 1995 C220,with the AC on at idle,the pressure on the low side climbs to about 60 and the belt starte to squeal a bit.The engine seems to really work hard and the AC kicks out.When you rev it up a bit with the AC on,the pressure staysbetween 25 and 40 and seems okay.I had the receiver drier changed last year and I had to top up the r134 this summer.It worked fine for awhile but now this.One more thing,the auxillary fans don't turn on when the AC engages but they will come on if I unplug the wiring connector from the receiver drier.Any help would be much appreciated.TIA